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NO.1 There was a time when I hated to go to school.

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NO.1 There was a time when I hated to go to school.
这里的time前面为什么用a 不用the?后面不是有定语从句修饰么 不是特指?
NO.2 In a review of 44 studies,American researchers found that men and women who ate six key foods daily cut the risk of heart disease by 76%.
这里heart disease前面不加冠词是为啥哩?疾病前面是不是都不需要?food为啥是复数形式?它什么时候不可数什么时候可数?
NO.3 One way to understand thousands of new words is to gain a good knowledge of basic word formation.
这里为什么gain后面加a不加the?knowledge不是有修饰词么?
NO.4 According to the World Health Organization,health care plans are needed in all big cities to prevent the spread of AIDS.
同理 这里的spread有of短语修饰 为什么它就用the特指不是a呢?
到时候我会追加分的!
NO.1 There was a time when I hated to go to school.
1.There was a time when ...是固定短语 翻译为:有一段这样的时期...
2.没有特指,所以不用加the 加了反而很怪,英语中语感很重要哦!
food作为食品的统称时为不可数名词,单数形式,指“一种食品时”可数,可以用复数.比如I like all kinds of foods, vegitables, fruits...这里把一个food当成是一种食品,foods指各种食品.同理,vegitable,fruit等类似性质的词也一样.
3.the是特指的时候才用, a good knowledge of 也是固定短语,译为对...有很好的了解 有修饰词不一定要用the,一切据题意所需
4.你一定被 a(an),the的用法搞得晕头转向吧,其实这些不难的,根据题意和语感就OK啦.像这里,the特指 AIDS啊.
相信你自己啊,不要自己挖个陷阱使劲往里钻哦!不过看得出你很细心嘛!O(∩_∩)O~